Valve.



T. SHADE.

VALVE.

APPLICATION FILED 950,21, 190er4 Patentei Fume I4, 19N). Ig I llllllllll NETE@ STATES agrandi carica.

THEODORE SHADE, OF SACRAMENTO, CALIFORNIA., ASSIGNOR TO LIGHTNING VALVE AND DBEDGE COMPANY, OF STOCK'ION, CALIFORNIA. A

p VALVE.

Spec'cation of Letters Patent.-

Patented June 14, 1919.

.To all whom t may concern:

'a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in valves and particularly to four-way valves used in connection with air brakes, water systems, oil lines etc., my object being to produce such a valve as 4may be used for air, water, steam and oil in such a manner as to permit the same to be under the utmost control at all times and particularly with air or steam to direct the same, either for I direct or reverse application. With air brake systems the valve can be used both for directing a direct application of the brakes and also a reverse application for causing a direct release of the brakes. In steam the valve can be used to direct the steam both for direct driving and yfor reversing an engine. All these objects I accomplish by means of a valve head having four ports and a valve turnably dis osed 1n. said head and having diametrical y disposed transverse ports adapted to `register with the ports in said head for the purposes set forth above; also by such other andl further construction as will appear b a perusal of the following speciiication an claim.

In the drawings similar characters of reference indicate coresponding parts in the.

several views.

Figure 1 is a top plan view of the complete device. Fig. 2 is a sectional view taken relatively on a line c of Fig; 1. Fig. 3 is a top plan View of a valve head with the cap removed. -Fig 4 is a bottom plan view of a valve. Fig. 5 is a sectional view of a valve taken relatively on a line of Fig. 2. Fig. 6 is a sectional View taken relatively on a line a a of Fig. 4'.

'Referring now more particularly to the characters of reference on the drawing 1 designates a valve head having a seat 2 into which open four ports 3,' 4, 5 and 6, while 7 is a bleed port leading from the port 3 to the head, for a purpose as will appear. upper end of the head 1 is formed with a flange 8 to which is bolted a cap 9, which cap is formed witha quadrant 10 formed with a plurality of sockets 11 for the purpose as will appear. Seated on the seat 2 is a valve 13 having two curved ports 414 and 15 disposed through the body of said valve and opening into the bottom thereof, said ports being diametrically opposite one another and adapted to be brought into register with the ports 3, 4, 5 and 6 in a manner and for the purpose as will appear. In the center of said valve 13 is an orifice 16 surrounding which is an upwardly extending shoulder 17 provided with an orifice 18.

19 is a valve stem seated in the orifice 16 and provided with a cross orifice 20 adapted to register with the orilice 18 and receive a pin 21 which secures the two together. Said stem 19 extends upward through the cap 9 and is surrounded by a packing box 22 formed as a part of the cap 9 and filled with packing 23 held in position by means of a washer 24 and cap 25. The top of the stem 19 is formed with a ring 26 upward from.

which is a shoulder 27 on which a handle 28 1s secured b means of a cross pin 29. Said handle 28 1s formed with a sleeve 30 in wh1ch is disposed a pin 31 adapted to engage the sockets 11 as desired, sald pin being pivoted to an auxiliary handle 32 pivoted to the handle 28 and having an end regulating sprlng 33.

34 is a port in the side of the head 1, while 35 is a port in the cap 9 both for the purpose as will a pear.

1 will now escribe the use of this valve as I would use it in connection with air brake systems, it bein of course understood that the valve may e used in any lace wklere the type of valve described is a apta e.

1n using this vimproved valve in connection with air brakes I do awa with all 1auxiliary reservoirs and run a tram line ipe direct from the port 6 to the front en of the brake piston cylinder and a reverse train pipe from the port 4 to the rear end of the rake cylinder, the port 3 being connected with the main reservoir tank pressure, while the ort 5 leads to the atmosphere. 0n the qua rant 10 the sockets 11 indicate the points of the diiierent positions of the valve The A closed.

The engineer desires to make an application of the brakes and so grasps the handle 28 and releases the pin 31 from its engagement by means of the member 32, and then moves the handle vto the position marked Service. This opens the port 15 from the port 3 to the port 6, thus turning main reservoir pressure into the front of the brake cylinder', thus setting-thefbrakes with a service application. If an emergency application 1s desired the engineer turns the handle 28 to point marked Emergency on the uadrant 10. This opens the yport 15 full rom the port 3 to the port 6 thus driving the brakes on hard with a -full reservoir pressure. Having set the brakes, if the engineer desires to release them, he turnsthe handle 28 to the point marked Release. This opens the port 14 from the port 6 to the ort 5, thus exhaustin the a1r from the ront of the brake cylinder to the atmosphere, and at the same time the port 15 opens slightlyvfrom the port 3 to the port 4, thus turning main reservoir pressure into the rear of the brake c linder and driving the brakes to release. f the vbrakes refuse to respond readily to this application thedriving the brakes hard to release. Then when the brakes are set again the port 14 Opens from the port 4 into 'the 4port 5, thus exhausting the air from 4the rear of the brake cylinder to the atmosphere.

The main reservoir pressure from theport 3 bleeds through the port 7 into the head 1,

thus holding the valve 13 balanced in place without the need 'of a spring or other mechanism.

The port 34 maylead to the governor on the air pumps thereby leading main reservoir pressure thereto, as is desired.

The port 35 may lead to the air pressure gage 36,- thus showing the condition of the main reservoir pressure. a

The above description applies to the device as it is used in connection with the air brake system. In practice, however, it may be used in connection with steam, water, oil or other matter as desired and connected in a manner as is essential for the purpose.

Thus it will be seen that `I have produced sucha valve as fulfils all the objects of the invention as set forth herein.

' While this specication sets forth in deing having a removable .cap on its up er side and four ports in its lowerl side, a va ve seated in said casing and having ports adapted to communicate said ports in said lower side with each other as desired, said valve having a central orificein its up r side, an upwardly projecting flangey di? posed on said valve around said oriice, a ,valve stem projecting through said cap and into said orifice, a pin projectingy through said flange and said stem, and 'an operating handle on said stem.

In testimon whereof I aix my signature in presence o two witnesses.

THEODORE SHADE. Witnesses:

JOSHUA B. WEBSTER, PEncY S. WEBSTER. 

